| Kapeljus, Emil Borosovich | Emil Borosovich Kapeljus | Costume Designer, Designer | 2003 - 2008 | 5 | 1 |
| Kristoffersen, Ingunn | Ingunn Kristoffersen | Actor | 2003 - 2008 | 3 | |
| Kraft, Iris | Iris Kraft | Costume Designer, Designer | 2003 - 2009 | 7 | 1 |
| Kaminski, Bettina | Bettina Kaminski | Actor | 2003 - 2009 | 3 | |
| Karki, Aruna | Aruna Karki | Actor | 2003 - 2010 | 11 | |
| Krampe, Marc-Oliver | Marc-Oliver Krampe | Actor, Dramaturg | 2003 - 2010 | 13 | 1 |
| Kritzeck, Hannah | Hannah Kritzeck | Actor | 2003 - 2011 | 35 | 1 |
| Küng, Rainer | Rainer Küng | Lighting Designer | 2003 - 2012 | 4 | |
| Keller, Eva Maria | Eva Maria Keller | Actor | 2003 - 2013 | 9 | 2 |
| Klasson, Ida Marianne Vassbotn | Ida Marianne Vassbotn Klasson | Actor | 2003 - 2013 | 5 | 1 |
| Kukla, Otto | Otto Kukla | Actor, Designer, Director | 2003 - 2013 | 5 | 1 |
| Kovtun, Georgij | Georgij Kovtun | Adaptation, Choreographer, Director | 2003 - 2013 | 9 | |
| Kastler, Heide | Heide Kastler | Costume Designer | 2003 - 2014 | 7 | 1 |
| Korolic, Dayan | Dayan Korolic | Actor, Composer | 2003 - 2016 | 8 | |
| Kreischer, Jutta | Jutta Kreischer | Costume Designer | 2003 - 2017 | 4 | |
| Kjeldstadli, Mari Vatne | Mari Vatne Kjeldstadli | Adaptation, Director, Dramaturg | 2003 - 2022 | 15 | 1 |
| Kavanaugh, Rachel | Rachel Kavanaugh | Director | 2004 | 7 | 1 |
| Keefer, Elizabeth | Elizabeth Keefer | Actor | 2004 | 1 | |
| Kelly, Elaine | Elaine Kelly | Costume Designer | 2004 | 1 | |
| Kingsford-Brown, Jeff | Jeff Kingsford-Brown | Director | 2004 | 1 | |
| Kloster, Matthew | Matthew Kloster | Actor | 2004 | 1 | 1 |
| Knowles, Pauline | Pauline Knowles | Actor | 2004 | 5 | |
| Koensgen, John | John Koensgen | Actor | 2004 | 1 | 1 |
| Kopischke, Kärin | Kärin Kopischke | Costume Designer | 2004 | 1 | 1 |
| Kosidowski, Paul | Paul Kosidowski | Dramaturg | 2004 | 1 | 1 |
| Kraan, Mark | Mark Kraan | Actor | 2004 | 1 | |
| Krassa, Susanne | Susanne Krassa | Actor | 2004 | 1 | |
| Kahl, Franziska | Franziska Kahl | Actor | 2004 | 1 | 1 |
| Kühn, Nikolaus | Nikolaus Kühn | Actor | 2004 | 1 | |
| Kas'janova, Gennadija | Gennadija Kas'janova | Director | 2004 | 1 | |
| Kjersem, Irina | Irina Kjersem | Costume Designer | 2004 | 1 | |
| Kruse, Jonas | Jonas Kruse | Actor | 2004 | 1 | 1 |
| Kyle, Patricia | Patricia Kyle | Actor | 2004 | 1 | |
| Krūmiņa, Līva | Līva Krūmiņa | Actor | 2004 | 1 | |
| Karge, Henning | Henning Karge | Actor | 2004 | 1 | |
| Knopper, Michael | Michael Knopper | Actor | 2004 | 1 | |
| Knopper, Georg | Georg Knopper | Actor | 2004 | 1 | |
| Katholnig, Luka | Luka Katholnig | Actor | 2004 | 1 | |
| Klemt, Arthur | Arthur Klemt | Actor | 2004 | 1 | 1 |
| Krassnig, Gerold | Gerold Krassnig | Actor | 2004 | 1 | |
| Krassnitzer, Erich | Erich Krassnitzer | Actor | 2004 | 1 | |
| Krammer, Dieter | Dieter Krammer | Actor | 2004 | 1 | |
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